When a person talks to you on IM and he suddenly does not reply for a certain period of time without saying brb, peace, bbl, etc.
Yo bro, I was talking to Robert on AIM about basketball, and when we got to the topic of prom, he suddenly pulled a Zack on me.
by Master Showman October 14, 2009
When you rally too hard the night before an event, and are now a lazy piece of shit that cannot party at said originally planned event.
Chelsey decided to pull a Zack and Brooke by drinking with coworkers one night before the holiday party, and is now drinking water.
by WaterBOII December 20, 2020